带扳手弹簧全启式安全阀适用范围
a48y型安全阀适用于工作温度≤350℃的蒸汽、空气等介质的设备和管路上，a44y适用于工作温度≤300℃的空气、石油等介质的设备和管路上作为超压保护装置，连接法兰标准按pn<6.4mpa按jb/t-94系列1标准,pn≥6.4mpa按jb/t-94系列2标准。
带扳手弹簧全启式安全阀产品型号 type of the products
| a48y-16c | a44y-16c | a44y-16p | a44y-16r |
| a48y-25 | a44y-25 | a44y-25p | a44y-25r |
| a48y-40 | a44y-40 | a44y-40p | a44y-40r |
| a48y-64 | a44y-64 | a44y-64p | a44y-64r |
| a48y-100 | a44y-100 | a44y-100p | a44y-100r |
带扳手弹簧全启式安全阀主要零部件材料 meterial for main parts
| 序号no. | 零件名称 name of part | a48y-c a44y-c材料 materials | a44y-p 材料 materials | a44y- r 材料 materials |
| 1 | 阀体 body | wcb | zg1cr18ni9ti | 1cr18ni12mo2ti |
| 2 | 阀座 nozzle | 2cr13 | 1cr18ni9ti | 1cr18ni12mo2ti |
| 3 | 调节圈 adjusting ring | zg2cr13 | zg1cr18ni9ti | 1cr18ni12mo2ti |
| 4 | 反冲盘 disc holde | zg2cr13 | zg1cr18ni9ti | 1cr18ni12mo2ti |
| 5 | 阀瓣 disc | 2cr13 | 1cr18ni9ti | 1cr18ni12mo2ti |
| 6 | 导向套 guide sleeve | 2cr13 | 1cr18ni9ti | 1cr18ni12mo2ti |
| 7 | 阀盖 bonnet | zg230-450 | zg230-450 | zg230-450 |
| 8 | 弹簧 spring | 50crva | 50crva包覆氟塑料 coated teflon | 50crva包覆氟塑料 coated teflon |
| 9 | 阀杆 stem | 2cr13 | 1cr18ni9ti | 1cr18ni9ti |
| 10 | 扳手 lever | zg200-400 | zg200-400 | zg200-400 |
| 11 | 调整螺杆 adjusting bolt | 45 | 2cr13 | 2cr13 |
| 12 | 保护罩 cap | zg200-400 | zg200-400 | 316 |
| 密封面材料 sealing surface of material | 堆焊co基硬质合金depositing stellite | |||
